package com.t17;

import java.util.*;

/**
 * Created by xuyiwei on 2018/8/26.
 */
public class Synchronization {
    public static void main(String[] args) {
        Collection<String> c = Collections.synchronizedCollection(new ArrayList<>());
        List<String> list = Collections.synchronizedList(new ArrayList<String>());
        Set<String> s = Collections.synchronizedSet(new HashSet<>());
        Map<String,String> m = Collections.synchronizedMap(new HashMap<>());
        Map<String,String> sm = Collections.synchronizedSortedMap((new TreeMap<>()));
    }
}
